21748052897 has 8 divisors (see below), whose sum is σ = 23072947200. Its totient is φ = 20441184624.

The previous prime is 21748052873. The next prime is 21748053023. The reversal of 21748052897 is 79825084712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21748052897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21748052867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4504022 + ... + 4508847.

It is an arithmetic number, because the mean of its divisors is an integer number (2884118400).

Almost surely, 2^21748052897 is an apocalyptic number.

It is an amenable number.

21748052897 is a deficient number, since it is larger than the sum of its proper divisors (1324894303).

21748052897 is a wasteful number, since it uses less digits than its factorization.

21748052897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9013015.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 21748052897 in words is "twenty-one billion, seven hundred forty-eight million, fifty-two thousand, eight hundred ninety-seven".